This report presents the results of a study by Working Group 13 of the AGARD Fluid Dynamics Panel which was formed to investigate the state-of-the- art of methodologies for aerodynamic design of engine intakes for high speed vehicles. The scope of the investigation included intake aerodynamics, intake/ engine compatibility, and intake/airframe integration for both aircraft and missiles. The present capability of Computational Fluid Dynamics (CFD) methods was assessed through a comparative analysis of both CFD predictions and experimental data. This analysis was conducted for eight different flow field test cases designed to produce critical features of air-intake flow fields. Flow field results and comparisons are presented both in the report and in a microfiche appendix. Air-inlet wind tunnel testing techniques and limitations were also investigated and reported. Results from measurements of inlet performance from three European wind tunnels using a common axisymmetric pitot intake are also presented. The participants in Working Group 13 represented Belgium, France, Germany, Italy, the United Kingdom, and the United States. Jet engine inlets, Aerodynamics, Computational fluid dynamics, Design, Flow distribution, Aircraft, Wind tunnel tests, Missiles, Jet engines.

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